VULNERABILITY INTELLIGENCE
CVE-2026-42548
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-05-13
Last modified2026-10-26
Description
Flight is an extensible micro-framework for PHP. Prior to 3.18.1, Flight::jsonp() concatenates the ?jsonp= query parameter directly into an application/javascript response body without validating that the value is a legal JavaScript identifier. An attacker can inject arbitrary JavaScript that executes in the response origin, enabling reflected cross-site scripting. This vulnerability is fixed in 3.18.1.
Weakness classification
- security-advisories@github.com: CWE-79